INFLUENCE OF SALIVARY CONTAMINATION ON DENTIN BOND STRENGTH OF ONE BOTTLE ADHESIVE SYSTEMS- INVITRO STUDY
For effective bonding the primer should infiltrate demineralized collagen web. The present study showed that salivary contamination has no significant effect on the Shear Bond Strength of one bottle system when it was blot dried, washed or retched with H3PO4. When the contaminated surface was dried completely there was a significant decrease in bond strength. The bond strengths to tooth structure of recent dentin bonding agents are less sensitive to common forms of contamination than assumed. Re etching without additional mechanical preparation is sufficient to provide or achieve the expected bond strength. Thus adhesive restorations should have sufficient bond strengths to prevent micro leakage around restoration margins and reinforce the tooth structure against forces that cause fracture. Reliable bonding systems have revolutionized the practice of adhesive dentistry though improvements in bonding techniques and systems have yet to be continued.
B. P. Suryakumari Nujella
Hyderabad, In
